Fundamental Research on Establishment of Numerical & Mechanical Models for Unsaturated Soils

数值模拟建立的基础研究

• 批准号: 10650490
• 负责人: KITAMURA Ryosuke
• 金额: $ 0.51万
• 依托单位: Kagoshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650490/
• 关键词: Unsaturated Soil; Model for Voids; Permeability Testing Apparatus; Water Retention Curve; Unsaturated Permeability Coefficient; Decision of Input Parameter; Numerical & Mechanical Models; Simulation; マルコフモデル; 不飽和透水試験; 不飽和三軸試験

The research results are summarized as follows.・The soil testing apparatus for unsaturated permeability was made and the accurate unsaturated permeability coefficient and water retention we were obtained by this apparatus.・The proposed numerical & mechanical models can quantitatively simulate the seepage behavior of water in unsaturated soil well.・The compute program was developed to simulate the failure of particulate material based on the discrete element method. The failure pattern was investigated in order to identify the potential slip line which was needed for the slope stability analysis.・The energy consumed in the compression and shearing processes was investigated for the particulate material, which is one of the important factors for the Markov model.

研究结果总结如下:·研制了土壤非饱和渗透试验装置，获得了准确的非饱和渗透系数和保水性。提出的数值力学模型可以很好地定量模拟非饱和土中水的渗流行为。·开发了基于离散元法模拟颗粒材料失效的计算程序。为了确定边坡稳定性分析所需的潜在滑移线，研究了边坡的破坏模式。·研究了颗粒材料在压缩和剪切过程中消耗的能量，这是马尔可夫模型的重要因素之一。

项目成果

Y. Miyamoto, K. Jomoto and R, Kitamura: "In-situ measurement of temperature and suction in unsaturated soil and their modeling"J. of Applied Mechanics JSCE. 2 Iin Japanese). 593-598 (1999)

Y. Miyamoto、K. Jomoto 和 R, Kitamura：“非饱和土中温度和吸力的原位测量及其建模”J。

S. Fukuhara, K. Uemura and R. Kitamura: "Numerical and mechanical models for seepage and failure of unsaturated particulate material"J. of Applied Mechanics JSCE. 1 (in Japanese). 757-766 (1998)

S. Fukuhara、K. Uemura 和 R. Kitamura：“不饱和颗粒材料渗流和破坏的数值和力学模型”J。

R. Kitamura, M. Seyama and H. Abe: "Investigation of seepage hevior through usaturated soil"First Asian Conference on Unsaturated Soils (Unsat-Asia 2000). (Accepted). (2000)

R. Kitamura、M. Seyama 和 H. Abe：“非饱和土渗流现象的调查”第一届亚洲非饱和土会议（Unsat-Asia 2000）。

R. Kitamura, T. Iryo, H. Abe, H. Yakabe and K. Yamamoto: "Prevention system for natural disaster due to slope failure"Proc. Int. Sympo. On Slope Stability Engineering(IS-Shikoku). 1. 483-488 (1999)

R. Kitamura、T. Iryo、H. Abe、H. Yakabe 和 K. Yamamoto：“斜坡失稳导致的自然灾害预防系统”Proc。

R. Kitamura, M. Seyama, and H. Abe: "Investigation of seepage behavior through unsaturated soil"Asian Conference on Unsaturated Soils (Unsat-Asia2000). (発表予定).

R. Kitamura、M. Seyama 和 H. Abe：“非饱和土壤渗流行为的调查”亚洲非饱和土壤会议（Unsat-Asia2000）（待提交）。